Thank you for the feedback, many solutions have been suggested by players and content creators, and big number of them are under consideration by the dev team . One of which is having more arena tiers especially in higher echelons ( plat for example ) to help spread out the players over wider groups. It's not confirmed yet but it's one of many suggestions that are under consideration. Feel free to propose any solution you think is a good fit and we'll forward it as well if it hasn't been before. 

While i understand the viewpoint of the OP and agree more tiers is a good solution - that would have to be tiers ABOVE gold four in order to not inflate the difficulty of the arbiter mission even more

The current system is better than a month ago.

I'm not sure how much additional tiers would actually help. How far people are able to advance will always be dependent on the net change of arena points in the system. What additional tiers might do is reduce the point loss at the reset, particularly in G4 where the biggest drops will occur, but I don't know how many people are in G4 and how many of them make an effort to gain more arena points than they need to stay in G4 since platinum is basically a small whale playground that most people have no reason to try for. End of the day though, unless you have a net positive arena point change, there will always be people at the bottom no matter how long they've played or what teams they have, and that's not a great situation when we're talking about a feature that is important for your overall progress.

Regardless, if the goal is just to push people up, then bots/whatever is a perfectly fine solution, since they'll increase the generation of arena points. Is it satisfying to play? No, not really, but then I haven't felt any sort of satisfaction from playing the arena since my first month when there was some actual variety in teams (mostly on account of no one really knowing what they were doing, I suspect), before everything devolved into a speed race. In that sense, being able to progress while also not having to expend an effort in the arena is great. I've actually been using all my tokens recently. In addition, like I've said elsewhere, it's an enormous relief to escape from the power-based matchmaking system of bronze/silver which lets me do things elsewhere without getting punished for it. Still, the relief is somewhat blunted by that fear that at any point they might "fix" the arena again and I'll be screwed if I slip down to S4 again.

Actually fixing the arena to be something other than a comparison between luck on speed rolls for the most part would require a lot more work. If they aren't willing to do that, and I have seen nothing to indicate that they are, then making the arena something that people can for the most part ignore (with these supposed bots for example) is for the better. Having a feature that is irrelevant is far preferable to having a feature that is just frustrating. 

Very well said.

facepalm. 

the best customer/complaint complaint system is a garbage bin, after you solve a problem, all other asking for more after that should go to garbage bin for the sake of coders, testers and other users. 

Solutions  might  also  lie  in  changing  everything  where  arena  has  an  effect  on,  like  the  hall  and  the  missions